Search for dissertations about: "fibre network stress"

Showing result 11 - 15 of 15 swedish dissertations containing the words fibre network stress.

2. 11. Residual stresses in paperboard and the influence of drying conditions

   Author : Magnus Östlund; Sören Östlund; Douglas Coffin; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; paper; drying; mechanical properties; residual stress; curl;

   Abstract : The drying sequence in the manufacturing process for paperboard involves evaporation of water, primarily from within the fibres. The vapour is then transported out of the web by pressure or concentration gradients. READ MORE

4. 12. Micro-mechanically based modeling of mechano-sorptive creep in paper

   Author : Johan Alfthan; Peter Gudmundson; Staffan Toll; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; applied mechanics; materials science; packaging; Materialvetenskap; Materials science; Teknisk materialvetenskap;

   Abstract : The creep of paper is accelerated by moisture content changes. This acceleration is known as mechano-sorptive creep, which is also found in wood and some other materials. Mechano-sorptive creep has been known for several decades but it is still not well understood, and there is no generally accepted model explaining the effect. READ MORE

5. 13. The flow of pulp suspensions

   Author : Helena Fock; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pulp suspensions; Velocity profile; Concentration profile; Wall layer; Particle image velocimetry; Flow behaviour; Computational fluid dynamics; Ultrasound velocity profiling;

   Abstract : Large quantities of pulp suspensions are handled in the pulp and paper industry and knowledge of their flow behaviour is very important in the design and operation of process equipment. Despite this, there is still a lack of a fundamental understanding of the mechanisms of the pulp suspension flow. READ MORE

6. 14. Mechanical modelling of blade forming and drainage of flocculated suspensions

   Author : Claes Holmqvist; Anders Dahlkild; Douglas Bousfield; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; blade forming; pressure distribution; interaction; suction; drainage; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

   Abstract : A method has been developed for flexible modelling of multi-component twin-wire blade formers. Features such as suction devices, loadable blades, curved blades, and partial contact between the blades and the forming fabrics are easily incorporated. READ MORE

7. 15. Peptidergic innervation of periarticular tissue : a study in the rat

   Author : Paul Ackermann; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Immunohistochemistry; radioimmunoassay; pain measurement; Achilles tendon; collateral ligaments; joint capsules; tendon rupture; regeneration; peripheral nervous system; neuropeptides; delta opioid receptor;

   Abstract : Painful musculo-skeletal disorders pose a tremendous burden on the healthcare system, the main reason being the limited knowledge of the underlying pathomechanisms and lack of specific treatment. Hypothetically, the peripheral nervous system in the musculo-skeletal tissues plays an important role in the regulation of pain, inflammation, vasoactivity and also tissue repair. READ MORE